Year Number of Firms 1992-01-01 517 1997-01-01 591 2002-01-01 653 2003-01-01 668 2004-01-01 733 2005-01-01 723 2006-01-01 749 2007-01-01 806 2008-01-01 918 2009-01-01 777 2010-01-01 820 2011-01-01 840 2012-01-01 760 2013-01-01 701 2014-01-01 725 2015-01-01 713 2016-01-01 763